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arXiv · 2603.17951

Measurement of coherent elastic neutrino nucleus scattering on germanium by COHERENT

M. Adhikari·M. Ahn·D. Amaya Matamoros·P. S. Barbeau·V. Belov·I. Bernardi·C. Bock·A. Bolozdynya·R. Bouabid·A. Bracho·J. Browning·B. Cabrera-Palmer·N. Cedarblade-Jones·S. Chen·A. I. Colón Rivera·V. da Silva·Y. Efremenko·S. R. Elliott·A. Erlandson·L. Fabris·S. Foster·A. Galindo-Uribarri·E. Granados Vazquez·M. P. Green·B. Hackett·J. Hakenmüller·M. Harada·M. R. Heath·S. Hedges·Y. Hino·H. Huang·W. Huang·H. Jeong·B. A. Johnson·T. Johnson·H. Jones·A. Khromov·D. Kim·L. Kong·A. Konovalov·Y. Koshio·E. Kozlova·A. Kumpan·O. Kyzylova·Y. Lee·S. M. Lee·G. Li·L. Li·Z. Li·J. M. Link·J. Liu·Q. Liu·X. Lu·M. Luxnat·A. Major·D. M. Markoff·J. Mattingly·H. McLaurin·K. McMichael·N. Meredith·Y. Nakajima·F. Nakanishi·J. Newby·N. Ogoi·J. O'Reilly·A. Orvedahl·D. S. Parno·D. Pérez-Loureiro·D. Pershey·C. G. Prior·J. Queen·R. Rapp·H. Ray·O. Razuvaeva·D. Reyna·D. Rudik·J. Runge·D. J. Salvat·J. Sander·K. Scholberg·H. Sekiya·A. Shakirov·G. Simakov·J. Skweres·W. M. Snow·V. Sosnovtsev·M. Stringer·C. Su·T. Subedi·B. Suh·B. Sur·R. Tayloe·Y. -T. Tsai·E. E. van Nieuwenhuizen·C. J. Virtue·G. Visser·K. Walkup·E. M. Ward·R. Wendell·T. Wongjirad
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Abstract

The COHERENT collaboration reports the most precise measurement of the coherent elastic neutrino-nucleus scattering cross section to date. This measurement was performed with COHERENT's germanium detector array, Ge-Mini, at the Spallation Neutron Source at Oak Ridge National Laboratory. A cumulative exposure of $4.68\times10^{22}$ protons on target yielded a total number of observed counts of $124^{+14}_{-12}$ and a flux-averaged cross section of $1.00 \pm 0.10 \mathrm{(statistical)} \pm 0.10 \mathrm{(systematic)}$ relative to the standard-model expectation of $5.9\times10^{-39} \mathrm{cm}^2$. The well-understood energy and timing distributions of the neutrino source allow for independent measurements of muon- and electron-neutrino scattering rates. This information is used to improve constraints on non-standard neutrino interactions mediated by heavy particles.

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M. Adhikari, M. Ahn, D. Amaya Matamoros, P. S. Barbeau, V. Belov, I. Bernardi, C. Bock, A. Bolozdynya, R. Bouabid, A. Bracho, J. Browning, B. Cabrera-Palmer, N. Cedarblade-Jones, S. Chen, A. I. Colón Rivera, V. da Silva, Y. Efremenko, S. R. Elliott, A. Erlandson, L. Fabris, S. Foster, A. Galindo-Uribarri, E. Granados Vazquez, M. P. Green, B. Hackett, J. Hakenmüller, M. Harada, M. R. Heath, S. Hedges, Y. Hino, H. Huang, W. Huang, H. Jeong, B. A. Johnson, T. Johnson, H. Jones, A. Khromov, D. Kim, L. Kong, A. Konovalov, Y. Koshio, E. Kozlova, A. Kumpan, O. Kyzylova, Y. Lee, S. M. Lee, G. Li, L. Li, Z. Li, J. M. Link, J. Liu, Q. Liu, X. Lu, M. Luxnat, A. Major, D. M. Markoff, J. Mattingly, H. McLaurin, K. McMichael, N. Meredith, Y. Nakajima, F. Nakanishi, J. Newby, N. Ogoi, J. O'Reilly, A. Orvedahl, D. S. Parno, D. Pérez-Loureiro, D. Pershey, C. G. Prior, J. Queen, R. Rapp, H. Ray, O. Razuvaeva, D. Reyna, D. Rudik, J. Runge, D. J. Salvat, J. Sander, K. Scholberg, H. Sekiya, A. Shakirov, G. Simakov, J. Skweres, W. M. Snow, V. Sosnovtsev, M. Stringer, C. Su, T. Subedi, B. Suh, B. Sur, R. Tayloe, Y. -T. Tsai, E. E. van Nieuwenhuizen, C. J. Virtue, G. Visser, K. Walkup, E. M. Ward, R. Wendell, T. Wongjirad. 2026-03-18. Measurement of coherent elastic neutrino nucleus scattering on germanium by COHERENT. https://arxiv.org/abs/2603.17951

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